Steven C. Hayes PhD is a Nevada Foundation Professor of Psychology at the University of Nevada. An author of 47 books and nearly 700 scientific articles, he is especially known for his work on "Relational Frame Theory," a comprehensive empirical research program on human language and cognition, and for its appplication to "Acceptance and Commitment Therapy" or “ACT” which is one of the most widely used and researched new methods of psychological intervention over the last 20 years. Dr. Hayes has received several national awards, such as the Lifetime Achievement Award from the Association for Behavioral and Cognitive Therapy. His popular book "Get Out of Your Mind and Into Your Life" for a time was the best-selling self-help book in the United States, and his recent book "A Liberated Mind" was released to wide acclaim. His TEDx talks and blogs have been viewed or read by over three million people. Research.com lists him as among the top 10 clinical psychologists in the world.